When the first settlers of Tython observed Ashla and Bogan, they developed the notions of the light and the dark side of the Force—which they also called Ashla and Bogan, respectively—and understood the necessity for a balance between those two Force aspects.[5] These beliefs gave rise to a legend of the Je'daii Order which stated that the two moons were birthed by Tython from its fiery core in order to remind of the perpetual struggle between dark and light to all those who sought balance.[3] In the second millennium following the settlement of Tython,[5] the non–Force-sensitive Tythans colonized the moons, building stone cities there, and later settled the rest of the worlds in the star system.[3]

Millennia later, Hadiya—the queen of the planet of Shikaakwa—sent her armies to attack the Je'daii on Tython.[5] During the ensuing battle, many Shikaakwan pilots crashed their Pho-V fighters on the planet's moons. Following the end of the war, both Ashla and Bogan were scoured by the Je'daii for remains of the starfighters.[6] By the year25,793 BBY,[7] Ashla had been abandoned by the settlers and was used as a place where the Je'daii would send those members of the Order who had strayed too far to the light side of the Force. Those exiled Je'daii would meditate on the moon of Bogan in order to re-achieve balance between the two aspects of the Force, while, conversely, the Je'daii who had veered too much to the dark side were sent to Bogan and contemplated the moon of Ashla.[2] One of the Je'daii exiles on Ashla was the HumanfemaleRori Fenn who spent some time on the moon and was subsequently allowed to return to Tython.[6]